Pressurized electrochemical battery and process for manufacturing the same

ABSTRACT

A pressurized electrochemical battery and process for manufacturing the same, which comprises several connectors to at least one electrochemical cell with several electrical energy collectors that are connected to the connectors, with the electrochemical cell comprising several electrode sheets and several solid electrolyte sheets inserted between the electrode sheets, and at least one deformable chamber arranged in contact with the electrochemical cell, with the deformable chamber supplied with a fluid that deforms the chamber to apply pressure to the electrochemical cell.

SECTOR OF THE ART

The present invention is related to storage systems of electricalenergy, specifically to energy storage systems by electrochemical means,proposing a pressurized battery with solid electrolyte and a process formanufacturing the same that optimizes the contacts between thecomponents and improves the storage and discharge capacity of thebattery, along with the number of cycles that it can withstand.

STATE OF THE ART

The sector of electrochemical batteries is a sector that has evolvedsignificantly through different technologies and applications.Currently, the leading battery technology is lithium ion, due mainly toits large capacity for accumulation of energy per unit of mass and itsresistance to multiple charge and discharge cycles.

These batteries are made up of a set of components. Of these, theprincipal components are the electrodes, the anode and cathode, and theelectrolyte. The anode is usually made up of an active material such asgraphite and the cathode is made up of another active material, such asa lithium oxide, both generally in a sheet format. These materials allowlithium atoms to be ceded or accumulated. The electrolyte is usually amaterial with a certain load of a lithium salt, with the capacity toallow the lithium ions to move through this medium. The operatingprincipal of these batteries is that the anode and cathode are twoactive materials capable of generating a different reduction potential,which, by means of a red-ox reaction when both electrodes are connectedand are in contact through an electrolyte that allows the movement oflithium ions, leads to the generation of electrical current.

The scarcity of lithium, as well as the other common materials inlithium oxides, in the earth's crust has prompted research intoalternative materials due to supply problems and monopolies. Incomparison with lithium, the simplest alternative would be sodium, analkali metal with a very similar structure, but unlike lithium, one ofthe most abundant ones on the planet. The use of sodium involves severalconditioning factors in comparison with lithium (lower power densities,larger atomic size, different active materials and electrolytes, etc.)but the principles of action are the same, so it is seen as probably themost interesting line of research to reduce material costs in batteries,especially for stationary applications where the final weight of thebattery is not as critical as in mobile applications.

In addition to the principal components described above, a series ofmaterials are normally used in the anode and cathode that act as anelectrical conductor (aluminum, copper, etc.), facilitating the contactbetween the active materials and the conduction of the generated currentto the exterior of the battery. A separation material between the anodeand cathode is normally used, especially with the use of liquidelectrolytes, given that direct contact between them could lead to theappearance of chemical reactions that damage the battery. Thisseparation material is usually a microperforated polymer that allowsions to pass through.

The management of battery temperature is a critical aspect of thetechnology, because it is sometimes necessary to maintain a specificoperating temperature to optimize operation. In addition, uncontrolledthermal situations that could lead to what are known as “thermalrunaways”, or exothermal reactions that damage or even destroy thebattery, must also be prevented.

Within the field of electrolytes, the liquid electrolytes alreadymentioned are normally used, generally based on organic solvents with acertain load of lithium salt. However, this type of electrolyte poses aseries of drawbacks in the manufacturing processes as well as duringbattery operation, in terms of contact and wear, which translate intopoor performance and shorter lifetime. For this reason, the batterysector is beginning to look into the use of solid electrolytes thateliminate those issues.

There is currently one main problem in relation to the development ofelectric batteries using solid electrolytes, which is the capacity togenerate good contact between the active materials and the electrolyte.If the contact is not good, it is more difficult for the ions to movefrom one electrode to the other, and therefore the charge/dischargecapacity and even the power density of the battery is lower.

In addition, especially in the case of sodium-ion batteries, themovement of ions from one electrode to the other involves significantvariations in the volume of the electrodes, which can cause problems ofdeformation and cracking of some components, which result in damage orthe total loss of the battery.

In addition, currently in the battery sector, manufacturing processesare focused on the manufacture of small cells with, with limitedproduction rates and semi-automatic manufacturing processes. This meansthat in the final scenario, the cost of lithium in a battery is around2%, versus the 65% that the cells may represent in the total cost, withthe estimated manufacturing costs of cells at a significant 35% of thetotal cost of the battery.

Below, as an example, a series of documents are listed that show thecurrent battery manufacturing processes, in other words, mainly usinglithium, liquid electrolytes, and manufacturing processes with a lowlevel of automation.

The document WO2018008682 describes a battery manufacturing process, butit uses liquid electrolyte in its composition with the complexity thatthis involves in the manufacture, and the detriment to performance thatit causes during operation.

The document US2018219252 describes the manufacturing process for asolid electrolyte battery, but that uses lithium in its activematerials, despite the scarcity of this element, and does not use asystem to control the pressure exerted between the electrolyte and theelectrode.

The document US20020192553 presents a sodium-ion battery with reversibleoperation, but whose electrolyte is in the liquid state, whichcomplicates the automation of the manufacturing process of the batteriesand shortens their lifetime.

The document KR101439080 describes a sodium battery with solidelectrolyte that maximizes the contact area between electrodes andelectrolyte to achieve the maximum possible performance, but that doesnot use additional means to facilitate said contact and to be able toregulate it during battery operation.

The document US2017250406 presents a sodium-ion battery with a sodiummetal anode and a solid ceramic electrolyte conductor of sodium ions,but whose efficiency depends to a large extent on the quality of contactbetween the electrodes and the electrolyte and it does not use anyadditional system to facilitate or maximize contact, and requires theaddition of a second electrolyte for correct operation.

OBJECT OF THE INVENTION

The invention relates to an electrochemical battery with an improvedstructural execution that makes it possible to increase the contactbetween the active materials of the battery and the electrolyte,improving the performance and electrical charge capacity of the battery.The invention also relates to a process to manufacture anelectrochemical battery that makes it possible to automate themanufacturing process and achieve high production rates.

The pressurized electrochemical battery that is the object of theinvention comprises:

-   -   several anode and cathode connectors,    -   at least one electrochemical cell with several electrical energy        collectors that are connected to the connectors, with the        electrochemical cell comprising:        -   several electrode sheets, and        -   several solid electrolyte sheets inserted between the            electrode sheets, and    -   at least one deformable chamber arranged in contact with the        electrochemical cell, with the deformable chamber supplied with        a fluid that deforms the chamber to apply pressure to the        electrochemical cell.

This means that the deformable chamber supplied with the fluid makes itpossible to regulate and control the surface contact between thedifferent sheets of the electrochemical cell, optimizing batteryperformance, improving the storage and discharge capacity of thebattery, and increasing the number of charge cycles that the battery canwithstand during its lifetime.

According to an exemplary embodiment of the invention, the batterycomprises various electrochemical cells, with each cell pressed betweentwo deformable chambers. Preferably, the electrochemical cells have acylindrical configuration and are arranged according to a concentricdistribution, which makes it possible to optimize the space occupied bythe battery and simplify its manufacture.

The deformable chambers are connected to a system of fluid supplycollectors, such that by means of said fluid, the pressure exerted bythe chambers can be regulated, and the battery can be cooled, which,among other factors, improves the storage capacity of the battery.

Preferably, the collector system has a delivery system to control theintake flow to the collector system and a pressure regulator to adjustthe pressure inside the deformable chambers.

Each electrode sheet comprises two layers of active material and onelayer of conductive material, wherein the layers of active materialpartially cover both sides of the layer of conductive material, with theends of the layer of conductive material protruding with respect to thelayers of active material, using said protruding part of the layer ofconductive material for the collectors to obtain electrical energy fromthe electrochemical cells that are connected to the battery connectors.

According to an exemplary embodiment, the electrode sheets are formed byanode sheets and cathode sheets of a same active material. According toanother exemplary embodiment, the electrode sheets are formed by anodesheets and cathode sheets of different active materials. In other words,several of the electrode sheets are connected to the anode connector andother electrode sheets are connected to the cathode connector, with saidsheets able to be made of the same material or different materials.

Preferably, the solid electrolyte is made of a polymer, ceramic orcomposite material.

Another object of the invention is a process for manufacturing apressurized electrochemical battery that comprises the steps of:

-   -   the use of a first roll that has an electrode sheet, a first        sheet, overlaid on a sheet of solid electrolyte,    -   the use of a second roll that has another electrode sheet, a        second sheet, overlaid on another sheet of solid electrolyte,    -   the use of a rotating spindle on which a deformable chamber is        positioned,    -   alternately winding on the deformable chamber the first        electrode sheet with the solid electrolyte sheet and the second        electrode sheet with the other solid electrolyte sheet,    -   encapsulating the assembly formed by the electrode sheets, solid        electrolyte and the deformable chamber.

This obtains a process for manufacturing electrochemical batteries thatmay be automated, achieving high production rates and thereforeminimizing the unit manufacturing cost of the battery.

DESCRIPTION OF THE FIGURES

FIG. 1 shows a perspective view of a pressurized electrochemical batteryaccording to a preferred embodiment of the invention.

FIG. 2 shows a longitudinal cross-section view of a part of thepressurized electrochemical battery in the previous figure.

FIG. 3 shows a schematic view of the layers that form an electrode sheetthat is arranged on a solid electrolyte sheet.

FIG. 4 shows a partial view of the electrode sheet of the previousfigure.

FIG. 5 shows a cross-section view of a part of the pressurizedelectrochemical battery in FIGS. 1 and 2 with continuous electrodesheets.

FIG. 6 shows a cross-section view of a part of the pressurizedelectrochemical battery in FIGS. 1 and 2 with discontinuous electrodesheets.

FIG. 7 shows a perspective view of a machine for carrying out themanufacture of a pressurized electrochemical battery like the onerepresented in the exemplary embodiment in FIGS. 1 and 2.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows a pressurized electrochemical battery according to apreferred embodiment of the invention, wherein the battery has acylindrical configuration, although it is not limited to thisconfiguration and the battery may adopt other shapes with this notaltering the concept of the invention.

The cross-section view of FIG. 2 shows the interior configuration of thepreferred embodiment of the battery in FIG. 1. The battery comprisesseveral connectors (1,2) or terminals, wherein said connectors are ananode connector (1) and a cathode connector (2), through whichelectrical energy that is stored in the battery is charged anddischarged.

In the preferred exemplary embodiment in FIG. 2, the battery comprises aset of electrochemical cells (3), wherein each one of the cells (3) isarranged between two deformable chambers (4) that receive a fluid, suchthat said fluid makes it possible to modify the size of the chambers(4), deforming them, and therefore pressing the elements that make upthe electrochemical cell (3) to ensure adequate contact between them.

The vertical black arrows shown on the electrochemical cells (3) in FIG.2 indicate the direction in which the deformable chambers (4) exertpressure on the cells (3). The other black arrows in FIG. 2 indicate thedirection of the fluid that is received by the chambers (4).

In the preferred embodiment in FIGS. 1 and 2, the electrochemical cells(3) have a cylindrical configuration and are arranged according to aconcentric distribution, making it possible to optimize the occupiedspace.

Optionally, each one of the electrochemical cells (3), individually orthe set all of them collectively, may be covered by a sealing materialor be arranged in a sealing encapsulation.

Also optionally, there may be internal structural components separatingeach one of the electrochemical cells (3) of the battery.

In any case, it its most simplified configuration, the battery wouldhave a single electrochemical cell (3) that on one of its long sideswould be arranged in contact with a deformable chamber (4) and on itsopposite long side would be arranged in contact with a fixed part of thebattery. Preferably, said single cell (3) would be arranged between twodeformable chambers (4).

The electrochemical cells (3) have several collectors (5) at each one oftheir ends. The collectors (5) are secured by several flanges (6) andare connected to the connectors (1,2) by means of several electricalconductors (7). The collectors (5) of one of the ends of the cell (3)are connected electrically to the anode connector (1) and the collectors(5) of the other end of the cell (3) are connected electrically to theconnector of the cathode (2).

Each one of the deformable chambers (4) has a fluid intake and outletthat are connected to a system of collectors (8) through which the fluidthat is supplied to the chambers (4) circulates.

Preferably, the fluid that is supplied to the chambers (4) is a coolingfluid, such that the deformable chambers have a dual function; on onehand, regulating the pressure applied to the electrochemical cells (3),and on the other, cooling the battery.

Thus, the chambers (4) have both adjustable temperature and pressure,both of which may be adjusted depending on the specific operatingconditions of the battery. The pressure and temperature may be differentdepending on the battery process state: charging, discharging or atrest.

Since the pressure can be modified based on the operating conditions, inaddition to improving the contact between the elements that make up theelectrochemical cells (3), the battery conform to the volume variationsin the cell (3) in response to the ion exchanges that they undergoduring the charging and discharging processes.

Preferably, the system of collectors (8) has a delivery system (9) and apressure regulator (10). The delivery system (9) is located at theintake of the system of collectors (8) and makes it possible to controlthe intake flow to the system of collectors (8), and with this, thebattery temperature, while the pressure regulator (10) makes it possibleto adjust the pressure inside the deformable chambers (4), and withthis, the contact between the elements that make up the cells (3).

The electrochemical cells (3) are arranged under conditions of a vacuumand controlled atmosphere inside the battery. Thus, the electrochemicalcells (3) are installed in a housing defined between two deformablechambers (4) that are closed at their ends by several lateral covers(11). Said lateral covers (11) have several expansion seals (12) thatmake it possible to absorb the contractions experienced by the housingsof the electrochemical cells (3) when the fluid of the chambers (4)deforms them.

The electrochemical cells (3) are made up of several electrode sheets(13) and several solid electrolyte sheets (14), with the electrodesheets (13) being inserted between the solid electrolyte sheets (14).

As shown in FIG. 3, each electrode sheet (13) comprises two layers ofactive material (131) and one layer of conductive material (132). Thelayers of active material (131) are arranged on both sides of the layerof conductive material (132), partially covering them, such that thelayer of conductive material (132) protrudes with respect to the layersof active material (131) at its ends, with said ends acting aselectrical energy collectors (5) that will be connected to theconnectors or terminals (1,2) to extract and generate the voltages andcurrents expected in the design of the battery.

Also as shown in FIG. 3, the electrode sheet (13) is arranged on thesolid electrolyte sheet (14), with the ends of the sheet of conductivematerial (132), in other words, the collectors (5) protruding withrespect to the solid electrolyte sheet (14).

The material of the electrode sheets (13) will depend on the finalchemistry of the battery; in the case of lithium, the active material ofthe anode could be graphite and the active material of the cathode alithium oxide (LCO, LNO, NMO, NMC, . . . ), while, in the case ofsodium, the electrode sheets (13) could use active materials such ashard carbons in the anode and sodium oxide, Prussian blue, or evenorganic-based materials as the active material in the cathode. In bothcases, lithium or sodium metal could also be considered for the activematerial of the anode. The solid electrolyte (14) could be made of apolymer material, a ceramic material, or even a composite.

In addition, the deformable chambers (4) are made of deformablematerials, which include elastomers or even metals, such as aluminum infilms with a limited thickness.

The electrode sheets (13) may be continuous, as shown in FIG. 5, ordiscontinuous, as shown in FIG. 6, such that there is a separationbetween sheets (13). This will provide a certain degree of flexibilityin the deformation of the sheets (13), such that they can slide betweenthem in response to the application of interior pressure withoutexperiencing mechanical stresses that could damage them.

Likewise, when the electrode sheets (13) that are connected to the anodeconnector (1) and the electrode sheets (13) that are connected to thecathode connector (2) are made of the same active material, saidseparation between sheets (13) is favorable to prevent short-circuits.

In regard to the solid electrolyte sheets (14), depending on the type ofmaterial of the electrolyte, they may have an arrangement of sheets witha limited length, as shown in FIG. 6, or if their mechanical propertiesallow it, they may be continuous and deform in response to the pressureexerted, as shown in FIG. 5.

Preferably, the sheets (13,14) have several cavities in the radialdirection of the battery through which they are equipped with severalconduits for an additional fluid with cooling properties. Said cavitiescan be connected to an additional system to supply a liquid or gaseousfluid, such that it allows the delivery of said fluid through saidconduits, in addition to the fluid that is circulating through thedeformable chambers (4). Using a tempered fluid with controlledtemperature throughout all of the cavities and chambers (4) achievesthermal management that improves the performance of the battery,avoiding the problems associated with overheating and even allowing thegeneration of batteries that are thicker than the set of sheets (13,14),thus increasing their storage capacity.

According to the embodiment shown in FIG. 2, the collectors (5) areinterconnected, preferably by means of a soldering process, and groupedby the flanges (6), so that by means of the collectors (5), the set ofelectrode sheets (13) that make up the electrochemical cells (3) aregrouped together. This means that there will be one contact zone in eachcell (3) for each connector (1,2). In another alternative configuration(not shown in the figures), there may be a contact zone at each one ofthe lateral ends of the layer of conductive material (132) for each oneof the connectors (1,2).

Preferably, the electrical conductors (7) that connect the collectors(5) to the connectors (1,2) are made of a flexible material, such thatsaid material tolerates and adapts to the different deformations thatthe battery experiences during its operation.

The battery has been designed to have an exterior encapsulation (15),which acts as a barrier between different batteries that may be arrangedin series, such that said encapsulation (15) prevents a battery fromcoming into direct contact with adjacent batteries.

The following section describes the procedure for the manufacture of thebattery with a cylindrical configuration in the preferred embodimentshown in FIGS. 1 and 2, although it is evident for a person skilled inthe art that batteries with configurations other than a cylindricalconfiguration can be obtained using the described procedure, with thisnot altering the concept of the invention.

As shown in FIG. 7, the battery is manufactured by means of a windingprocess, wherein electrode sheets (13) and solid electrolyte sheets (14)are progressively overlaid on a deformable chamber (4).

To do this, a first roll (16) that has an electrode sheet (13), a firstsheet, overlaid on a solid electrolyte sheet (14), and a second roll(17) that has another electrode sheet (13), a second sheet, overlaid onanother sheet of solid electrolyte (14) are used. The sheet (13) of thefirst roll (16) will be connected to the anode connector (1) and theother sheet (13) of the second roll (17) will be connected to theconnector of the cathode (2), as will be explained below.

In addition, the deformable chamber (4) is arranged on a rotatingspindle (18), and the sheets (13,14) of the first and second rolls(16,17) are wound in an alternating manner on said deformable chamber(4) until an electrochemical cell (3) with a desired thickness isobtained on the chamber (4).

The electrode sheet (13) overlaid on a solid electrolyte sheet (14) hasa configuration like the one shown in FIG. 3 and that was describedabove. Thus, the electrode sheet (13) comprises two layers of activematerial (131) between which a layer of conductive material (132) ispositioned and which protrudes with respect to the layers of activematerial (131).

By means of several rotating cutting dies (19) the ends of the electrodesheets (13) are partially cut to obtain several electrical energycollectors (5). To do this, the electrode sheets (13) are passed throughthe dies (19), partially cutting the layer of conductive material (132),which protrudes with respect to the layers of active material (131).

As shown in detail in FIG. 7, the layer of conductive material (132)that protrudes with respect to the layers of active material (131) ofthe sheet (13) of the first roll (16), is only trimmed on one side, suchthat collectors (5) are defined for the connection to the anodeconnector (1). In addition, the layer of conductive material (132) thatprotrudes with respect to the layers of active material (131) of thesheet (13) of the second roll (17), is only trimmed on one the otherside, such that collectors (5) are defined for the connection to thecathode connector (2).

After obtaining the electrochemical cell (3), the collectors (5) areflanged and soldered to each other, and are then interconnectedelectrically to the collectors (5) by means of several electricalconductors (7) and the collectors (5) of one of the ends of the cell (3)are connected electrically to the anode connector (1) and the collectors(5) of the other end of the cell (3) are connected electrically to thecathode connector (2). Lastly, the assembly formed by the electrodesheets (13), solid electrolyte (14) and the deformable chamber (4) isplaced in an encapsulation (15).

To obtain a battery with several electrochemical cells (3), like the oneshown in FIG. 2, prior to encapsulation and the electrical connection ofthe collectors (5), several assemblies of electrode sheets (13), solidelectrolyte (14), and deformable chambers (4) are wound, winding saidassemblies around each other according to a concentric distribution.

To obtain the rolls (16,17), first, a layer of conductive material(132), such as aluminum, copper or another more advanced material, suchas lithium-aluminum alloys, is automatically unrolled and sent to asystem for the application of a coating to cover the layer of conductivematerial (132) with layers of active material (131).

Said layers of active material (131) may be applied by means of printingsystems, electrostatic adhesion, or by any other method for coating orpriming layers, and it may even consist of a layer of active material(131) such as lithium or sodium metal. The electrode sheet (13) will beobtained in this manner.

A solid electrolytic coating is then applied on the electrode sheet(13), with said coating applied on one or both sides of the electrodesheet (13). The electrode sheet (13) with the solid electrolyte sheet(14) is obtained in this manner. Preferably, the solid electrolyte sheet(14) is applied from a roll of solid electrolytic material.

In one configuration of the invention, the electrode sheets (13) andsolid electrolyte sheets (14) are cut before being wound onto thedeformable chamber (4). In another configuration of the invention, theelectrode sheet (13) is cut, but leaving the solid electrolyte sheet(14) uncut. In another configuration, cuts are not made in the sheets(13,14), so that the sheets wound onto the deformable chamber (4) arecontinuous, instead of having limited lengths.

The process described for the manufacture of the rolls (16,17) will beexecuted in installations with a controlled atmosphere, preferably witha relative humidity below 0.01%, and preferably with a pressurizedatmosphere that prevents leaks towards the interior, with the consequentpossibility that moisture may enter the enclosure. In an alternativeconfiguration, the described process will be executed in installationswith a strong vacuum to achieve the proper working conditions.

The application of the solid electrolyte mainly isolates the activematerials from the external atmosphere and therefore, this process mustbe carried out in an atmosphere with no special requirements that aredemanding as controlled atmosphere as in the case of the activematerials.

The rotating spindle (18) is expandable, or with variable dimensions, sothat it can accommodate the different concentric deformable chambers (4)optimally. This means that using one spindle (18), it is possible tomanufacture batteries with cells (3) with different internal diameters.

In a preferred configuration of the manufacturing process, thetemperature of the spindle (18) and material is managed in a controlledmanner, so that, by means of controlled thermal expansion, the finaladjustments and contacts between components can be more precise.

The invention claimed is:
 1. A pressurized electrochemical batterycomprising: anode and cathode connectors, a plurality of electrochemicalcells, each electrochemical cell comprising electrical energy collectorsconnected to the anode and cathode connectors, the electrochemical cellfurther comprising: a plurality of electrode sheets, and a plurality ofsolid electrolyte sheets inserted between the electrode sheets, anddeformable chambers, wherein each deformable chamber is arranged incontact with each one the plurality of electrochemical cells and issupplied with a fluid that deforms the chamber to apply pressure to theplurality of electrochemical cells, wherein the electrochemical cellsand the deformable chambers are assembled concentrically around eachother.
 2. The pressurized electrochemical battery according to claim 1,wherein each electrochemical cell is arranged pressed between twodeformable chambers.
 3. The pressurized electrochemical batteryaccording to claim 2, wherein the electrochemical cells have acylindrical configuration.
 4. The pressurized electrochemical batteryaccording to claim 1, wherein each electrochemical cell is installed ina housing defined between two deformable chambers that are closed attheir ends by several lateral covers that have several expansion seals.5. The pressurized electrochemical battery according to claim 1, whereinthe deformable chambers are connected to a system of fluid supplycollectors.
 6. The pressurized electrochemical battery according toclaim 5, wherein the system of fluid supply collectors comprises adelivery system to control the intake flow to the system of fluid supplycollectors and a pressure regulator to adjust the pressure inside thedeformable chambers.
 7. The pressurized electrochemical batteryaccording to claim 1, wherein each electrode sheet comprises two layersof active material and one layer of conductive material, wherein thelayers of active material partially cover both sides of the layer ofconductive material, with the ends of the layer of conductive materialprotruding with respect to the layers of active material.
 8. Thepressurized electrochemical battery according to claim 1, wherein theelectrode sheets are formed by anode sheets and cathode sheets of a sameactive material.
 9. The pressurized electrochemical battery according toclaim 1, wherein the electrode sheets are formed by anode sheets andcathode sheets of different active materials.
 10. The pressurizedelectrochemical battery according to claim 1, wherein the solidelectrolyte is made of a polymer, ceramic or composite material.
 11. Thepressurized electrochemical battery according to claim 1, furthercomprising electrical conductors, wherein the electrical conductors areflexible.
 12. The pressurized electrochemical battery according to claim1, wherein the plurality of electrode sheets and the plurality of solidelectrolyte sheets are equipped with several conduits of an additionalfluid with cooling properties.
 13. A manufacturing process of apressurized electrochemical battery according to claim 1 comprising:using a first roll that has an electrode sheet overlaid on a solidelectrolyte sheet, using a second roll that has another electrode sheetoverlaid on another solid electrolyte sheet, using a rotating spindle onwhich a deformable chamber is positioned, alternately winding on thedeformable chamber the electrode sheet with the solid electrolyte sheetand the other electrode sheet with the other solid electrolyte sheet,encapsulating the assembly formed by the electrode sheets, solidelectrolyte and the deformable chamber.
 14. The manufacturing processaccording to claim 13, wherein prior to encapsulation, severalassemblies formed by electrode sheets, solid electrolyte, and deformablechamber are wound, winding said assemblies around each other accordingto a concentric distribution.
 15. The manufacturing process according toclaim 13, wherein several rotating cutting dies are used to partiallycut the ends of the electrode sheets to obtain several electrical energycollectors.